v1.0
This commit is contained in:
hupeng
15
uni_modules/uv-grid/components/uv-grid-item/props.js
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15
uni_modules/uv-grid/components/uv-grid-item/props.js
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export default {
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props: {
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// 宫格的name
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name: {
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type: [String, Number, null],
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default: null
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},
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// 背景颜色
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bgColor: {
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type: String,
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default: 'transparent'
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},
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...uni.$uv?.props?.gridItem
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}
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}
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218
uni_modules/uv-grid/components/uv-grid-item/uv-grid-item.vue
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uni_modules/uv-grid/components/uv-grid-item/uv-grid-item.vue
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<template>
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<!-- #ifndef APP-NVUE -->
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<view
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class="uv-grid-item"
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hover-class="uv-grid-item--hover-class"
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:hover-stay-time="200"
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@tap="clickHandler"
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:class="classes"
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:style="[itemStyle]"
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>
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<slot />
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</view>
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<!-- #endif -->
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<!-- #ifdef APP-NVUE -->
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<view
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class="uv-grid-item"
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:hover-stay-time="200"
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@tap="clickHandler"
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:class="classes"
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:style="[itemStyle]"
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>
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<slot />
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</view>
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<!-- #endif -->
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</template>
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<script>
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import mpMixin from '@/uni_modules/uv-ui-tools/libs/mixin/mpMixin.js'
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import mixin from '@/uni_modules/uv-ui-tools/libs/mixin/mixin.js'
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import props from './props.js';
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/**
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* gridItem 提示
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* @description 宫格组件一般用于同时展示多个同类项目的场景，可以给宫格的项目设置徽标组件(badge)，或者图标等，也可以扩展为左右滑动的轮播形式。搭配uv-grid使用
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* @tutorial https://www.uvui.cn/components/grid.html
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* @property {String | Number} name 宫格的name ( 默认 null )
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* @property {String} bgColor 宫格的背景颜色 （默认 'transparent' ）
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* @property {Object} customStyle 自定义样式，对象形式
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* @event {Function} click 点击宫格触发
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* @example <uv-grid-item></uv-grid-item>
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*/
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export default {
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name: "uv-grid-item",
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mixins: [mpMixin, mixin, props],
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emits: ['$uvGridItem','click'],
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data() {
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return {
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parentData: {
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col: 3, // 父组件划分的宫格数
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border: true, // 是否显示边框，根据父组件决定
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},
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// #ifdef APP-NVUE
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width: 0, // nvue下才这么计算，vue下放到computed中，否则会因为延时造成闪烁
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// #endif
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classes: [], // 类名集合，用于判断是否显示右边和下边框
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};
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},
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created() {
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// 父组件的实例
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this.updateParentData()
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},
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mounted() {
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this.init()
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},
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computed: {
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// #ifndef APP-NVUE
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// vue下放到computed中，否则会因为延时造成闪烁
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width() {
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return 100 / Number(this.parentData.col) + '%'
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},
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// #endif
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itemStyle() {
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const style = {
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background: this.bgColor,
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width: this.width
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}
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return this.$uv.deepMerge(style, this.$uv.addStyle(this.customStyle))
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}
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},
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methods: {
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init() {
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// 用于在父组件uv-grid的children中被添加入子组件时，
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// 重新计算item的边框
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uni.$on('$uvGridItem', () => {
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this.gridItemClasses()
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})
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// #ifdef APP-NVUE
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// 获取元素该有的长度，nvue下要延时才准确
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this.$nextTick(function(){
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this.getItemWidth()
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})
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// #endif
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// 发出事件，通知所有的grid-item都重新计算自己的边框
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uni.$emit('$uvGridItem')
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this.gridItemClasses()
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},
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// 获取父组件的参数
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updateParentData() {
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// 此方法写在mixin中
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this.getParentData('uv-grid');
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},
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clickHandler() {
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let name = this.name
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// 如果没有设置name属性，历遍父组件的children数组，判断当前的元素是否和本实例this相等，找出当前组件的索引
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const children = this.parent?.children
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if(children && this.name === null) {
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name = children.findIndex(child => child === this)
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}
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// 调用父组件方法，发出事件
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this.parent && this.parent.childClick(name)
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this.$emit('click', name)
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},
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async getItemWidth() {
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// 如果是nvue，不能使用百分比，只能使用固定宽度
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let width = 0
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if(this.parent) {
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// 获取父组件宽度后，除以栅格数，得出每个item的宽度
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const parentWidth = await this.getParentWidth()
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width = parentWidth / Number(this.parentData.col) + 'px'
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}
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this.width = width
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},
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// 获取父元素的尺寸
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getParentWidth() {
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// #ifdef APP-NVUE
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// 返回一个promise，让调用者可以用await同步获取
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const dom = uni.requireNativePlugin('dom')
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return new Promise(resolve => {
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// 调用父组件的ref
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dom.getComponentRect(this.parent.$refs['uv-grid'], res => {
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resolve(res.size.width)
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})
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})
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// #endif
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},
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gridItemClasses() {
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if(this.parentData.border) {
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let classes = []
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this.parent.children.map((child, index) =>{
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if(this === child) {
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const len = this.parent.children.length
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// 贴近右边屏幕边沿的child，并且最后一个（比如只有横向2个的时候），无需右边框
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if((index + 1) % this.parentData.col !== 0 && index + 1 !== len) {
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classes.push('uv-border-right')
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}
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// 总的宫格数量对列数取余的值
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// 如果取余后，值为0，则意味着要将最后一排的宫格，都不需要下边框
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const lessNum = len % this.parentData.col === 0 ? this.parentData.col : len % this.parentData.col
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// 最下面的一排child，无需下边框
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if(index < len - lessNum) {
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classes.push('uv-border-bottom')
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}
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}
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})
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// 支付宝，头条小程序无法动态绑定一个数组类名，否则解析出来的结果会带有","，而导致失效
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// #ifdef MP-ALIPAY || MP-TOUTIAO
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classes = classes.join(' ')
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// #endif
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this.classes = classes
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}
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}
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},
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beforeDestroy() {
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// 移除事件监听，释放性能
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uni.$off('$uvGridItem')
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}
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};
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</script>
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<style lang="scss" scoped>
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$show-border: 1;
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$show-border-right: 1;
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$show-border-bottom: 1;
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@import '@/uni_modules/uv-ui-tools/libs/css/variable.scss';
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@import '@/uni_modules/uv-ui-tools/libs/css/components.scss';
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@import '@/uni_modules/uv-ui-tools/libs/css/color.scss';
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$uv-grid-item-hover-class-opcatiy:.5 !default;
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$uv-grid-item-margin-top:1rpx !default;
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$uv-grid-item-border-right-width:0.5px !default;
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$uv-grid-item-border-bottom-width:0.5px !default;
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$uv-grid-item-border-right-color:$uv-border-color !default;
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$uv-grid-item-border-bottom-color:$uv-border-color !default;
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.uv-grid-item {
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align-items: center;
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justify-content: center;
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position: relative;
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flex-direction: column;
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/* #ifndef APP-NVUE */
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box-sizing: border-box;
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display: flex;
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/* #endif */
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/* #ifdef MP */
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position: relative;
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float: left;
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/* #endif */
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/* #ifdef MP-WEIXIN */
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margin-top:$uv-grid-item-margin-top;
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/* #endif */
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&--hover-class {
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opacity:$uv-grid-item-hover-class-opcatiy;
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}
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}
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/* #ifdef APP-NVUE */
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// 由于nvue不支持组件内引入app.vue中再引入的样式，所以需要写在这里
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.uv-border-right {
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border-right-width:$uv-grid-item-border-right-width;
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border-color: $uv-grid-item-border-right-color;
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}
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.uv-border-bottom {
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border-bottom-width:$uv-grid-item-border-bottom-width;
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border-color:$uv-grid-item-border-bottom-color;
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}
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/* #endif */
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</style>
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20
uni_modules/uv-grid/components/uv-grid/props.js
Normal file
20
uni_modules/uv-grid/components/uv-grid/props.js
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@ -0,0 +1,20 @@
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export default {
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props: {
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// 分成几列
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col: {
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type: [String, Number],
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default: 3
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},
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// 是否显示边框
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border: {
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type: Boolean,
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default: false
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},
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// 宫格对齐方式，表现为数量少的时候，靠左，居中，还是靠右
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align: {
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type: String,
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default: 'left'
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},
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...uni.$uv?.props?.grid
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}
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}
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100
uni_modules/uv-grid/components/uv-grid/uv-grid.vue
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100
uni_modules/uv-grid/components/uv-grid/uv-grid.vue
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<template>
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<view
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class="uv-grid"
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ref='uv-grid'
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:style="[gridStyle]"
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>
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<slot />
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</view>
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</template>
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<script>
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import mpMixin from '@/uni_modules/uv-ui-tools/libs/mixin/mpMixin.js'
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import mixin from '@/uni_modules/uv-ui-tools/libs/mixin/mixin.js'
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import props from './props.js';
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/**
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* grid 宫格布局
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* @description 宫格组件一般用于同时展示多个同类项目的场景，可以给宫格的项目设置徽标组件(badge)，或者图标等，也可以扩展为左右滑动的轮播形式。
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* @tutorial https://www.uvui.cn/components/grid.html
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* @property {String | Number} col 宫格的列数（默认 3 ）
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* @property {Boolean} border 是否显示宫格的边框（默认 false ）
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* @property {String} align 宫格对齐方式，表现为数量少的时候，靠左，居中，还是靠右 （默认 'left' ）
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* @property {Object} customStyle 定义需要用到的外部样式
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* @event {Function} click 点击宫格触发
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* @example <uv-grid :col="3" @click="click"></uv-grid>
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*/
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export default {
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name: 'uv-grid',
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mixins: [mpMixin, mixin, props],
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emits: ['click'],
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data() {
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return {
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index: 0,
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width: 0
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}
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},
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watch: {
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// 当父组件需要子组件需要共享的参数发生了变化，手动通知子组件
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parentData() {
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if (this.children.length) {
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this.children.map(child => {
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// 判断子组件(uv-radio)如果有updateParentData方法的话，就就执行(执行的结果是子组件重新从父组件拉取了最新的值)
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typeof(child.updateParentData) == 'function' && child.updateParentData();
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})
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}
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},
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},
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created() {
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// 如果将children定义在data中，在微信小程序会造成循环引用而报错
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this.children = []
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},
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computed: {
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// 计算父组件的值是否发生变化
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parentData() {
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return [this.hoverClass, this.col, this.size, this.border];
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},
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// 宫格对齐方式
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gridStyle() {
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let style = {};
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switch (this.align) {
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case 'left':
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style.justifyContent = 'flex-start';
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break;
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case 'center':
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style.justifyContent = 'center';
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break;
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case 'right':
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style.justifyContent = 'flex-end';
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break;
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default:
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style.justifyContent = 'flex-start';
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};
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return this.$uv.deepMerge(style, this.$uv.addStyle(this.customStyle));
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}
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},
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methods: {
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// 此方法由uv-grid-item触发，用于在uv-grid发出事件
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childClick(name) {
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this.$emit('click', name)
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}
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}
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};
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</script>
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<style lang="scss" scoped>
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@import '@/uni_modules/uv-ui-tools/libs/css/components.scss';
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$uv-grid-width:100% !default;
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.uv-grid {
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/* #ifdef MP */
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width: $uv-grid-width;
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position: relative;
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box-sizing: border-box;
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overflow: hidden;
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display: block;
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/* #endif */
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justify-content: center;
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@include flex;
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flex-wrap: wrap;
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align-items: center;
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}
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</style>
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Reference in New Issue
Block a user